High Hardness Drill Bit High Beautiful Durable Titanium Coated HSS Step Drill Bit For Aluminum PV Plate Copper Thin Steel Plate

High Hardness Drill Bit High Beautiful Durable Titanium Coated HSS Step Drill Bit for Aluminum PV Plate Copper Thin Steel Plate Specification: Features: Drill bits are made of HSS material high hardness and durable in use Step drills are used for thin steel plate aluminum copper PV plate insulation board drill and reaming. Saw drills are used for wood pull grooving. is processed by Titanium coated improving the wear resistance of the drill bit and looks beautiful. This item contains 3 pcs step drill bit and 3pcs saw drill meet different working condition needs. Specifications: Material: HSS treatment: titanium coated Step drill size: 4-32mm / 0.16-1.26in 4-20mm /0.16-0.79in 4-12mm /0.16-0.47in Saw drill size: 3mm/0.12in 6mm /0.24in 8mm / 0.21in Weight: 275g Package included: 3 x Step Drill Bit 3 x Saw Drills